Fastener-attaching mechanism



June 9, 1925. 1,540,864

' L. G. SABBAG FASTENER ATTACHING MEGHANI SM Original Filed May 28, 1920 s Sheets-Sheet 1 Jung 9, 1925 L. G. SABBAG FASTENER ATTACHING MECHANISM 3 Sheets-Sheet 2 Original Filed y 28, 1920 7 June 9, 1925.

. L. G. SABBAG FASTENER ATTACHING MECHANISM Original Filed May 28, 1920 C5 Sheets-Sheet Patented June 9, 1925.

UNITED STATES PATENT o rics.

LI'IEALLAH SABBAG, 0F IBOEE'ION, HASSACH USET'TS, ASSIGNOR; OF ONE-HALF TO MAURICE A; METUALF, OF BOSTON, MASSACHUSETTS.

ras'rnlvnaarraonnvo MEGHANISM.

Application filed May 28, 1920,'Seria1 No. 3%,875. Renewed October 30, 1924.

1 0 (:ZZ w from 7125 may concern-.-

Be it known that I, IJITFALLAI-I G. SABBAG, a citizen of the United States of America, and resident of Boston, in the county of i Suffolk and State of Massachusetts, have invices there has been some attempt to provide for automatically feeding the buttons into attaching posltlon.

Such arrangements, however, so far as known have been found. objectionable from the standpoint of utility and economy by reason of their failure to present successive buttons with certainty and regularity in position for the proper passage of the securing instrumentalities through the button eye, or by reason of the complexity and delicacy of the parts employ-ed, rendering them expensive to make and difficult to. maintain in proper operative condition.

The object of the present invention is to provide in a simple and reliable manner for the feeding of buttons successively from a suitable reservoiror supply. into proper position with relation to the attaching instru- 'mcntalities of the sewing machine to permit the certain operation of the latter.

To this end the invention contennplates first the provision of a removable button reservoir which may be of interchangeable .construction so that a supply of tilled'reservon's may be kept on hand for success ve use, such reservoirs being preferably so dei .able connections for operating the various parts of the mechanism of a simple and durable character and which will, require little attentlon and few repairs under ord nary In carrying into effect the object stated: a button reservoir and transferring means ha-vefbeen designed of exceedingly simple form and durable construction and, which, by means of suitable controlling elements, may be caused tofunction with speed and accuracy.

While it is contemplated that the object of the present invention may be accomplished in many and various ways, that herein disclosed is regarded as a preferred form and as such has been illustrated in the accompanying drawings in which,

Figure 1 is a front elevation of so much of a sewing machine of ordinaryform as is necessary to disclose the application of this invention thereto; v FigureQ/ is an elevation from the left hand side of Fig. l on enlarged scale, showing applicants invention as applied to the machine of Fig. l; v i a Figure 3 is a top plan view of certain of the mechanisms shown in Fig. 2, the upper part thereof being sectioned away forclearness of disclosure;

Figure 4 isalfront to rear partial vertical section of the button receiving chamber forming apart of the mechanism; and Figure 5is a left hand elevation illustrating the movable gate for permitting the discharge of buttons, from the button receiver. i

- Referring to the drawings, 1 is the inai chine base and 2 the usual overhanging arm thereon, said arm carrying certain of the stitch forming instrumentalities including the needle bar 3 and the needle 4, all in the usual well known* manner. The machine herein disclosed is of that type intended: for the sewing onof buttonsand isprovided with the usual mechanism for this purpose. Included n this mechanism is an oscillatory sector .5 to wh ch osc llatory movements are imparted in time with the machineand operating through connections of, usual form and arrangement, an exampleof mechanism adaptable to such use being seen in the patent to lValrath, 528,832, Nov. 6, 18.94. Extending to the left,as seen in Fig. 1 from said sector is. an adjustable linkmember 6 having its end connected to the button clamp mechanism hereinafter described.

As is common to machines of this character it is proposed to provide automatically acting stop mechanism which will stop the machine at the completion of a predetermined number of stitcheswith the sector 5 always occupying the same angular position when the machine is stopped. It is also proposed to employ a manually actuable treadle for starting the machine at the beginning of each button attaching operation. Such devices being all old and well known in the art, it has been thought unnnecessary to describe them at length in this application.

, At a point to-the rear of the needle as respects the position of the operator'and upon the bed plate of the machine or a suitable bracket fixed thereto,is pivoted, as by means of a bolt 8, a supporting member 9, said supportingmember having projecting up from its rear extremity a, pair'of ears or lugs, one of which is indicated at 10. Passing through said lugs is a pivot pin 11 upon which is mounted to swingin a front to rear direction a, block 12, said block having attached to its upper end a support 13 carry ing the button clamp and the actuating devices therefor.

This button clamp is in general of ordinary construction and comprises briefly a pair of arms 14, 15 pivoted at 16, 17 res'pectively ,to the support 13,.said arms being normally forced toward each other into closingposition by means of a spring such as indicated at 18.. For the purpose of opening. theclamp comprising the jaws 14: and 15 for releasing a-button therefrom said jaws are provided with downwardly, extending pins 19, 20 respectively, said pins extending into inclined cam slots 21, 22, formed in aplate 23 slidableina front to rear direction.

Below the support 13 and connected to one end of the plate 23 as shown in Fig. 3 is a rod or bariQ slidably guided adjacent its rear end by means of a suitable bracket 25,

said bar having projecting from its rear extremity alug 26, which. 1s formed with a downwardly and forwardly inclined cam surface 27, see Fig. 2, for a purpose to be hereinafterdescribed. Thebutton clamp in addition to the movable .jaws lat and 15 comprises a fixed jaw 28. forming an abut ment or stop whereby the button isprevented from excessive rearward movement as it is inserted between the movable jaws of the clamp. v

The support 13 is provided near its forwardend with an upstanding boss29within which is secured a pivot pin 30 passing through an opening in the left handextreinity of the link 6 whereby upon oscillation of the sector 5 lateral movement is in'iparted plane in swinging about the pivot pin 11, aspring 31be1ng provided which normally acts to retain the button clamping presser foot in its lower or work-engaging position. Extending outwardly from the forward end of the support 13 or in any other convenient place is a staple 32 to whichis connected the 'lower'end' of a bar 33 by which the presscr foot and button clamp may be raised at the will of the operator as occasion' may require.

Fixed upon the front portion of the machinehead is a bracket 34 having a depend ing arm 35 extending downwardly and to the left of the needlebar as seen in Fig. 1.

The lower end of this arm 35 is provided with a laterally and-horizontally disposed portion 36 in which is formed a substantially horizontal guideway 38 which extends from front to rear -.transversely of the axis of the needle bar. j Said portion 36 is also provided with a substantially cylindrical, upwardly extending part, said part being tubular and forming a button receiving chamber 10; The left hand wall of said chamber as seen at 11 in Figs. 3 and a is somewhat higher than theright hand wall thereof and the latter is provided with a vertical. slot 12 for a purpose to be hereinafter describedn j r Slidable within the guideway 3r is a member 43 constituting a button transferrer. As herein shown that extremity of said transferrer which is directed toward the needle bar is provided'with an extension 4&1 having its upper surface 45 substantially flat and arranged to support a button. To

the rear of said surface 4-5, as respectsfithe direction of advance of the latter toward the needle bar, is formed an up 'a-rdly ere tending shoulder4t6, said shoulder as seen in Fig. 3 having a V-notch 47 therein. This 1 jiiotch serves to center a button placed upon the supporting surface 15, the shoulder acting as an impelling element for'moving the button toward the needle bar position as the slide 43 is so moved. At its extremity the extension 44 is provided with a notch 48 adapted to engage over .the end of the stationary clamping j aw 28 whereby to permit a button resting upon a surface 45 to firmly engage said jaw 28, To secure ill steel.

4:9 forming passages through which project a pair of prongs or fingers 50 carried by a resilient member illustrated as a flat spring 51 attached as by means of a screw 52 to the lower surface of the slide -13. As thus arranged the prongs or lingers 50' may er:- i

tend through the eyes of a button lying upon the surface and thus prevent any angular movement oi rotation of the button about its center while so positioned. On that extremity of the bar 4-3 which lies nearest the operator is pivotally secured the end of a slide bar 53 which as clearly indicated in Fig. 3 extends to the rear of the machine where it is guided in suitable supports 54 andbo. The supports 54aand 55 may it desired be carriedby a bracket 56 securedto the base plate of the machine, this arrangement, however, not being an essential part of the invention. Between the forward extremity of the bearing member 55 and acollar 5T fixed upon the roe 53 is a spring 58, said spring serving normally to maintain the slide $23 in its position nearest the opera tor as shownyin Fig. 3; An adjustable block 59 is secured to the rod 53, as by means of a set screw 60, and has formed upon its left hand portion a downwardly and .r'orwardly inclined cam surface 61, the purpose of which will be hereinafter described.

For the purpose ot feeding buttons in succession to the button receiver or chamber t0, the machine, in accordance with the present invention, is supplied with the removable supporting' reservoir shown more particularly in Figs. 1 and 5. At the right hand upper portion of the machine head is provided a forwardly extending. boss 62 having a substantially flat forward surface in which is a slot or groove 63 therein. 64 is a cover plate adapted to be secured to the forward surface of the boss 62 as by means of a screw 65 or other suitable ren'iovabie connection. The button reservoir comprises a filamentous element adapted to be passed through the eves of buttons to be strung thereon, said element as herein shown consisting;- of a suitable rod or wire 66 preterably of resilient material such' as spring This wire or rod has its central and main portion substantially straight but is bent at its extremities to provide oppositely directed portions 67. 68 respectively, the portion 6? being; arranged to be received within the slot 63 and to be securely retained in position therein by means of the cover plate or. The reversely curved downengagement with the wire 66 from wardly extending portion 68 otthe reservoir wire arranged to be positioned within the button receiving chamber 40, the slot a2 in said reservoir serving to facilitate the positioning of the end 68 therein.

gularityxof the extremity 68 are such that the downnardiy directed tip of the wire is wardly inclined direction to the lettand toward the receiver 40.

For supporting the reservoir wire (it at its free left hand extren'ii'y, thetorward face of the arm 2 is provided with a bracket member 69 arovided with forwardly ezrtending iugs 70, i1, having guiding openings therein through' which passes a vertically arranged bar or rod 72. The baror rod 2 has tired thereon, at a point between thelug's, a collar 73 and between said collar and tl'ieopposite lug is mounted a compression spring it, said spring serving normally to hold said bar or rod '7 2 at its upper limit of movement. The

bar orrod T2 at its lower end supports a downwardly extending hoolr lilre member (5, whlch is provided with a notch for whereby to support the latter. Above the notch 76 the hook member 75 is provided with a recess or opening 77. The upper end of the bar or rod 7 2 carries adisk '58 whereby the operator may depress the rod or bar 7 2 to bring recess Y7 into central alignment with the reservoir wire. A series of buttons 79 is shown as strung upon the reservoir wire 66, the left hand. button oi the series resting against the laterai surface of the hoolrmen'iber 75 which thusserves as an abutment to prevent tlOWliWt rd sliding of buttons alone the wire. The opening 7? abovethe notch 76 is of such exte'i'it as that p when the rod or bar is depressed as above noted and said opening is bro itinto central alignment with the wire (3o buttons'arc tree to pass downwardly along the wire through the opening or recess 77. The end of the hook member beyond the notch 76 may be bevelcd'as indicated at 75 so as to readily enter between buttons of the series in returning to its normalposition. The rod or bar 72 with the parts support-ed there-- by thus constitutes a support "for the button reservoir and a movable gate or retainer for permitting the discharge of buttons toward the terminal endot saidreservoir.

80, 81 indicate pair of lugs fixed to the head of the machineysaid lugslproviding ali ned vertical 0 enin s in which slid-- D it" ably guided a bar or rod 82. The bar or rod H The length ot the wire member 66 and the an pleted the attaching of a button to the 82 has its upper end bent angularly as shown at'83 to provide a substantially horizontal surface 84 the rearward extremity of said angular portion being downwardly bent whereby to form a portion 85 of arcuate form. To the lower extremity of the rod or bar 82 is connected the upper end of the link 88 here-inbefore referred to. Mounted in suitable bearings formed in a lug 86 projecting rearwardly from the machine head is a stub shaft 87 having fixed thereon a crank arm 88 whose extremity 89 is formed to engage tire surfaces 84 and 85 of the rod or bar 82, said surface 85 having a curvature substantially that of the circle struck out by said extremity 89 of arm 88 about the center of shaft 87. Fixed to the stub shaft 87 is a rearwardly and upwardly extending arm 90, said arm being engaged by a spring 91 secured to a fixed portion of the machine frame and serving normally to retain'the arm 90 in its uppermost position as shown in Fig. 2. To the free extremity of the arm 90 is connected a member 91 leading to a t suitable treadle of ordinary form preferably that employed for starting the machine.

At an intermediate point 92 of the arm 90 is connected the upper end of a vertically movable rod 93, said rod being suitably guided in its movements and having fixed thereon a block 94 adjustable thereon by means of a set screw 95 or in any other suit able manner. On its right hand face as viewed by the operator, the block 94 is provided with a downwardly and forwardly inclined cam surface 96, said surface and the cam surface 61 carried by the block 59 secured to rod 53intersecting the same vertical plane. To the left hand face of the block 94 ispivoted, by meansof a screw 97 or other suitable device, a cam carrying member 98 herein shown as a substantially flat plate provided at its lower side with a laterally extending forwardly and down \vardly inclined cam surface 99. i 190 is a stop pin serving to limit swinging of said member 98 in a forward direction about the screw 9?, said member 98 being held nor mally incontact with said pin 100 by means of a suitable spring 101. As seen in Fig.2 the cam surface 99 lies at a point substantially below the cam surface 96- The operation of the machine hereinbefore described is substantially as follows, it being understood that the needle is actuated in the usual manner together with the other stitch forming instrumentalities and that the button holding clamp is oscillated in time with the stitch forming mechamsm.

Supposing that the machine has'just com- MN) ric and that the parts are in the position in Fig. 2 with the machine stopped, the operator places h1s foot upon the treadle member thereby, through the connection 91,

swinging the member 90 downwardly about the center of shaft 87, moving the end 89 of the arm 88 in an upwardly directed arc.

During the first portion of such movement the surface 89 acting against surface 84 operates to lift the bar or rod 82 and through the connections described lifting the button clamping presser foot away from the bed plate until the clamping members he substantially in the horizontal plane of the guideway 38 and of the transferrer bar 48. Upon reaching this position the movement of surface 89 into contact with the arcuate surface 85 serves to determine the upward movement of bar 82 and at't-he same time to lock the same in its elevated position during the succeeding portion of the movement of the arm 90. As the operator continues to depress the treadle the rod 98 moves downwardly until the cam member 99 is brought into contact with the cam surface 27 carried by slide 24. Further movement operates to cam said slide 24 rearwardly, thereby releasing the clamping arms 14, 15 to drop the button therefrom. As the cam surface 99 is of: relatively short extent it quickly passes out of contact with the surface 27 During such movement of the bar 58 it being assumed that a button has been placed in the receiver 40. and that such button rests upon the surface 45, with the prongs or ifingers 50 extending upwardly through its eyes and with its edge engaged by the notched shoulder 48, travel of the transferrer 43 toward the needle position will carry the button from within said receiv ing chamber until the rim or edge of the lmttonst-rikes the forward extremity of the clamping jaws 14, 15 As the transferrer now continues to move, the button. impelled forward by the shoulder 46, serves to cam apart the jaws 14, 15, the movement of the transferrer 48 continuing until the button, is brought into engagement with the fixed jaw 28. As soon as this has been accomplished the operator releases the treadle, whereupon the rod 93 rises.

cams 96 and 61 permitting spring 58 to restore the button transferrer to normal position. As the cam 99 moves upwardly it again engagesthe log 26 but as the member 98 is free to swing about the pivot 97 in a rearward direction the cam 99 moves idly past the lug 28 withoutfurther actuating the clamp opening slide. During the movement of the member 98 the arm swii The first effectof i-lllS is to release the pressure between- Itastener capable ot use therein.

emcee of the operator.

As the butt ons are Liccessively moved mto attachm i position by the transiterrer, additional buttons are permitted to. slide down the inclined reservoir wire oneby one, the operator actuating the rod or bar 72 with its button discharging gate at the necessary intervals. In operation the resiliency of the reservoir wire 66 permits it-to vibrate readily under the at of the machine whereby the buttons are caused to flow freely and readily from the upper end of the reservoir toward its discharge end. It will furthermore be clear thatthe reservoir 6 is readily removable from the machine by detaching the cover plate S t and that a series of such reservoirs tilled with buttons may be kept in stock, tobe applied to the machine in succession the buttons thereon are exhausted.

When a reservoir wire having buttonsstrung thereon is applied to the machine, the buttons, by reason of the fact that they are suspended above their centers of gravity, automatically orient themselves into like positions with their eyes in vertical alignment, and throughout their movement along the reservoir wire gravity thus serves to maintain the buttons in the position which they first assume. As the buttons pass down the extremity 68 ot the wire they are prevented ttrom becoming angularly displaced by contact with the npwardly extending lett. hand wall ll of the button receiver and are thus caused to drop uponthe support-- ing surface in properly oriented position for the ready engagement with their eyes of both the prongs 50. The button supplv reservoir thus serves in an estrenielv simple and ("LlSlRClOUS' manner automatically to orient all buttons mounted thereon into proper position and to maintain them in such position throughout their travel toward the receiving devices, thereby avoiding any necessity on the partof the operator for using care in locating the buttons within the clamp, or the employn'ient of coinp'l icated and mechanically actuated devices tor accomplishing such a result.

lVhile in the tor'egoing descri -ition reference has been made to the feeding and attaching o't but-tons the term button has been used in a generic sense only and is intended to include any and every form oi the Having described a preterred form of the invention, and the mode of operation of the same, what I claim and desire to secure by Letters Patent oi the'United States is:

1. A reservoir for use in fastener attache ing machines comprising in combination aresilient member constructed and arranged to pass through an opening in a tastenerv whereby to pendantly support the same, and means for holding said member in downwardly inclined position and with its lower end tree.

2. In a button sewing machine in combi nation a button reservoircomprising a fililr mentous member inclined downwardly at an acute angle to the horizontal and constructed andarranged to constitute the sole support for buttons strung. thereon, and means for detachably supporting said reservoir in operative, button delivering position,

A reservoir for use in button sewing machines comprising a resilient member constructed and arranged to pass through the eye of a button and to constitute the sole support. for the button and means engaging one extremity of said member for supporting it in inclined position at an acute angleto the horizontal and with its lower end free.

4. In an attachment for button sewing machines, in combination a member constructed and arranged to be threaded through the eye of a button and devices for detachably supporting said member ina position slightly inclined to the horizontal.

5. In a device of the class described, in combination stitch forming instrumentalities and means for feeding button-s thereto in succession, said means comprising a detach able reservoir constructed and arranged automatically to similarly orient i all buttons supported thereby when secured in operative position.

6. In a device of the class described in combination, a length of wire having asubstantially straight central portion and a downwardly. curved terminalportion and meansengaging the upper extremity of saidwire for detachably securing the same in a groove comprising angrrlarly disposed portions therein, a fastener reservoir liaving ele-" ments arranged to be received in the respective portions of said groove, and a remov-, able cover plate tor securing said element in operative position within said groove.

9. A button reservoir for button sewing machines comprising means for supportingly engaging a series of buttons at points above their respective centers of gravity, and means for regulating discharge of buttons from said reservoir. 7

10. A reservoir for fasteners comprising in combination, a filamentous support upon which said fasteners may be successively strung and whereby they are supported, and a gate member movable transversely of said support and provided with an aperture for the passage of fasteners.

11. In a fastener attaching machine, in combination attaching instrumentalities, and a reservoir for fasteners, said reservoir comprising a downwardly inclined element upon which individual fasteners may be strung, means for supporting said element adjacent one extremity, and movable means for supporting said element at a point spaced from said first means, said movable means being constructed and arranged to determine the discharge of fasteners from said reservoir.

termediate point in its length, said member being provlded with a fastener delivering opening.

13. In a device of the class described, in combination with a rod-like fastener reservoir, a gate member cooperating with the same, said gate member comprising an element normally spring actuated to contact with said reservoir and serving to block the passage of fasteners therealong, said element being provided with a fastener discharge opening therein.

14. In an attachment of the class described, in combination, an. inclined, rod-like member upon which fasteners may be hung, and a gate therefor, said gate comprising a slidehaving a notched portion serving to engage said member, spring means normally maintaining said notched portion in engagement with said member, said slide being, provided with an opening adjacent said notched portion, and means whereby said slide may be moved in opposition to the spring whereby to position said opening for the passa e of fasteners therethrough.

15. In combination in a fastener attaching machine, a fastener reservoir constructed and arranged to deliver fasteners successively and in definite position of orientation, a receiver comprising a chamber for fasteners delivered from said reservoir Said chamber being of a cross section similar to the peripheral contour of a fastener, and a transferring device associated with said re cel-ver and arranged to convey successive fasteners therefrom to the point of use.

16. In a button attaching mechanism, in combination a button reservoir comprising an element constructed and arranged to dcliver buttons successively and in definitely a transferrer movable transversely across I one end of said receiver, and means movable with said transferrer constructed and arranged to engage the fastener positively and to prevent any angular displacement of the latter relatively to the transferrer.

18. In combination with fastener attaching instrumentalities including a fastener retaining clamp, a fastener receiving receptacle, and a transferrer for conveying fasteners from said receptacle to said clamp, said transferrer comprising a slide member movable across the end of said receptacle, and having afastener supporting element, a fastener impelling element, and means for preventing angular movement of a fastener relatively to the supporting element.

19. In a fastener attaching machine, in combination, a fastener retaining clamp provided with normally closed jaws, fastener presenting means and a transferrer constructed and arranged to receive a fastener delivered by said presenting means and forcibly to insert it between the jaws of said clamp said transferrer comprising means for positively preventing angular movement of the fastener during its insertion between said jaw.

20. In combination in a button sewing machine, a button receiving chamber, a button positioning clamp provided with relatively movable. jaws, spring means normally retaining said jaws in closed position. and a transferrer construct-ed and arranged to receive a button from said chamber and to thrust said button forcibly into contact with said clamping jaws whereby the edge of the-button serves to cam open the'jaws to receive the button between them, said transferrer comprising means for positively preventing angular movement of the button during its insertion between said jaws.

21. In a device of the class described, in combination, a fastener transferrer comprising a slide member having a forwardly eX- tending fastener supporting surface, a spring member mounted upon said trans-- ferrer adjacent said surface, and a plurality of fastenerengaging fingers carried by said llO spring member and extending outwardly from' said surface.

22. In a button attaching machine, in combination, a buttontransferring mechanism comprising a slide member having a forwardly directed vextension providing a button support, said extension being of less vertical thickness than the main portion of the slide, said slide having a notched button-impelling shoulder at its junction with the extension and said extension having a vertically arranged slot in its extremity.

23. In a button attaching machine, button attaching devices, a button delivering device, and a transferrer for conveying buttons from the latter to the former, said transferrer comprising means for positively preventing angular movement of the button during its transference from the delivering to the attaching devices, means normally operative to retain said transferrer in positionto receive a button from said delivering device, and a cam member for moving said transferrer toward said attaching devices.

24. A button sewing machine having in combination stitch forming devices and a button retaining clamp, a button delivering device, and a transferrer slidable in a direction to convey a button from said device to the clamp, said transferrer comprising means for positively restraining the button against angular movement, a spring actuated slide normally operative to hold said transferrer in button receiving position, and a treadle actuated cam movable transversely of said slide and constructed and arranged to engage an element of said slide whereby to move,the transf'err-er toward said clamp.

25. A button attaching machine comprising in combination a movable button clamp having spring closed jaws constructed and arranged to engage the edges of a flat button and means whereby the jaws may be opened, and devices for actuating said jaw opening means comprising a reciprocable cam movable relatively to an element of said opening means for actuating the latter, said cam being operative to actuate said means in one direction of movement only.

26. In combination in a button attaching mechanisn'i, a button clamp comprising relatively movable jaws, spring means for closing said jaws, a slide plate foropening said jaws, said plate having an actuating lug, and a pivotally supported member movable transversely of the path of said plate, said member having a cam element forengagin-g said lug whereby to actuate said slide.

27. In a fastener attaching machine in combination, a fastener retaining clamp comprising relatively movable jaws, spring means operative normally to close said jaws,

and an element constructed and arranged, upon continued movement in the same direction, momentarily to open said aws and immediately to release theinto close :uztion of said spring means.

A button attachingmechanism comprising incombination a pair of spring closed jaws, a slidable member for opening said jaws, and an 7 element reciprecable transversely of the movement of sa d slide and provided with a cannsaid cam being constructed and arranged operatively to en.- said slide whereby to open jaws when reciprocated in onedirection, and to slip idly pastsaid slide in its return movement. 7

29 1111 a machine of the class described, in combination, a button clamp having movable jaws, a slide for controlling the movement of said jaws, a movable button trans under ferrer for conveying a button to said jaws,

a slide for controlling said transferrer, a :am engaging lug carried by each of said slides, and a pair of cams simultaneously movable transversely of the direction of movement of said slides and constructed and arranged to engage the respective lugs whereby first to actuate the jaw controlling slide and thereafter to actuate the transferrer slide.

80. In a button attaching mechanism in combination, a button clamp comprising normally closed jaws, a button transferrer, and treadle actuated means comprising cam elements constructed and arranged successively to open said clamp and actuate the transferrer.

' 81. In a button sewing machine in combination, stitch forminginstrumentalities and a work support, a button clamp movable toward and from said support and serving as a presser foot, means normally maintaining the clamp in button retaining position, means for opening the clamp, and treadle actuated connections operative in succession to raise the button clamping presser foot, to maintain it in elevated position and to open the clamp.

32. A fastener, attaching mechanism having in combination attaching instrumentalities, a movable clamp device for retaining a fastener in attaching position, a transferrerfor inserting a fastener within said clamp, and means constructed and arranged successively to move the clamp to receiving position, to open the clamp to release a fastener therein, to close the clamp, and to aetuate the transferrer to insert a fresh fastener in the clamp.

33. A button attachingmechanism having in combination, a vertically movable button clamp, means normally acting to maintain said clamp in depressed position, a button transferrer mounted in a plane above the normal plane of said clamp, a vertically slidable member having connection wan said clamp and provided with an angularly disposed arm provided with an arcuate porbuttons from said magazine and deliver the same to the holder, saidfeed device having means for holding the buttons in predetermined position thcreon and the magazine having means for delivering the buttons to the feed device in such predetermined position, and operating means for the feed device. I

si ned by me C at Boston, Massachusetts, this fifteenth day of May, 1920. LITFALL'AI-I G. SABBAG. 

